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SAFETY PRECAUTIONS

MAINTENANCE AND REPAIR

• When lifting parts or assemblies, make sure all slings, chains, or cables are correctly fastened, and

that the load being lifted is balanced. Make sure the crane, cables, and chains have the capacity
to support the weight of the load.

• Do not lift heavy parts by hand, use a lifting mechanism.

• Wear safety glasses.

• DISCONNECT THE BATTERY CONNECTOR before doing any maintenance or repair on electric

lift trucks. Disconnect the battery ground cable on internal combustion lift trucks.

• Always use correct blocks to prevent the unit from rolling or falling. See HOW TO PUT THE LIFT

TRUCK ON BLOCKS in the Operating Manual or the Periodic Maintenance section.

• Keep the unit clean and the working area clean and orderly.

• Use the correct tools for the job.

• Keep the tools clean and in good condition.

• Always use HYSTER APPROVED parts when making repairs. Replacement parts must meet

or exceed the specifications of the original equipment manufacturer.

• Make sure all nuts, bolts, snap rings, and other fastening devices are removed before using force

to remove parts.

• Always fasten a DO NOT OPERATE tag to the controls of the unit when making repairs, or if the

unit needs repairs.

• Be sure to follow the WARNING and CAUTION notes in the instructions.

• Gasoline, Liquid Petroleum Gas (LPG), Compressed Natural Gas (CNG), and Diesel fuel are

flammable. Be sure to follow the necessary safety precautions when handling these fuels and
when working on these fuel systems.

• Batteries generate flammable gas when they are being charged. Keep fire and sparks away from

the area. Make sure the area is well ventilated.

NOTE:

The following symbols and words indicate safety information in this

manual:

WARNING

Indicates a hazardous situation which, if not avoided, could result in
death or serious injury.

CAUTION

Indicates a hazardous situation which, if not avoided, could result in
minor or moderate injury and property damage.

On the lift truck, the WARNING symbol and word are on orange back-
ground. The CAUTION symbol and word are on yellow background.

Summary of Contents for A274

Page 1: ...Hyster A274 H50CT Forklift Service Repair Manual...

Page 2: ...DRIVE AXLE AND DIFFERENTIAL ASSEMBLY REPAIR S50CT A267 H2 0 2 5CT H50CT A274 PART NO 4014306 1400 SRM 1426...

Page 3: ...cifications of the original equipment manufacturer Make sure all nuts bolts snap rings and other fastening devices are removed before using force to remove parts Always fasten a DO NOT OPERATE tag to...

Page 4: ...ing 19 Differential Assembly Cover 20 Drive Axle Center Section 21 Clean and Inspect 22 Assemble 23 Drive Axle Center Section 23 Differential Assembly Cover 25 Drop Box Housing 26 Differential Assembl...

Page 5: ...THE QUALITY KEEPERS HYSTER APPROVED PARTS...

Page 6: ...ore information Please click here Then get the complete manual NOTE If there is no response to click on the link above please download the PDF document first and then click on it Have any questions pl...

Page 7: ...and differential assembly IDENTIFICATION PLATE There is an identification plate located on the differ ential assembly cover See Figure 1 A FRONT OF TRUCK B REAR OF TRUCK 1 SERIAL NUMBER 2 DATE 3 IDEN...

Page 8: ...bed in section Mast Repair 4000 SRM 1431 CAUTION Disposal of lubricants and fluids must meet lo cal environmental regulations 4 Remove oil drain plug and drain oil from drive axle into a suitable cont...

Page 9: ...transmission isolator mounting bolt from transmission mounting bracket located on top of drive axle assembly See Figure 7 12 Remove four drive axle mounting capscrews from hanger assembly See Figure 4...

Page 10: ...9 ROLLER BEARING 10 INNER SEAL 11 INNER BEARING 12 OUTER SEAL 13 WEAR SLEEVE 14 BRAKE ASSEMBLY 15 LEFT BRAKE LINE 16 DRIVE AXLE MOUNTING CAPSCREW 17 DRIVE AXLE MOUNTING NUT 18 DIFFERENTIAL COVER 19 R...

Page 11: ...6 to 90 to 99 N m 66 to 73 lbf ft Repeat step for opposite side Figure 6 Hanger Assembly Tightening Sequence NOTE Apply Loctite 515 or High Performance RTV Silicone Gasket Maker on the drive axle sha...

Page 12: ...age for damage before use When adding air use a clip on chuck with enough hose to let the operator stand clear of the cage NOTE When tightening the wheel nuts DO NOT use any lubricant on the studs or...

Page 13: ...on Mast Repair 4000 SRM 1431 18 Raise lift truck and remove blocks from under frame and counterweight Lower lift truck 19 Remove blocks on each side front and back of steering tires 20 Operate lift tr...

Page 14: ...ve Axle Center Section Assembly STEP 1 Using a retainer ring special tool Hyster Part No 1663599 loosen the differential retainer rings If necessary loosen retainer ring capscrews to allow the retaine...

Page 15: ...emove differential assembly cover 1 DIFFERENTIAL ASSEMBLY COVER CAPSCREWS 2 DIFFERENTIAL ASSEMBLY COVER 3 DIFFERENTIAL ASSEMBLY 4 DRIVE AXLE CENTER SECTION STEP 3 Remove differential assembly from dri...

Page 16: ...OVER 4 PINION NUT 5 DRIVE AXLE CENTER SECTION CAUTION When removing the pinion nut make sure the staked areas do not touch the pinion threads The staked areas can cause damage to the pinion threads ma...

Page 17: ...move input shaft yoke oil seal and dust cover from drop box housing 1 INPUT SHAFT YOKE 2 DUST COVER 3 OIL SEAL STEP 4 Remove capscrews and washers from the drop box housing 1 CAPSCREW 2 WASHER 3 DROP...

Page 18: ...ternately until drop box housing can be removed If the capscrews do not have enough threaded length use a pry bar to finish removing the housing STEP 6 Remove outer tapered bearing from drop box hous...

Page 19: ...axle center section Using a press and bearing puller remove inner shims and inner tapered roller bearing from pinion shaft assembly 1 INNER TAPERED ROLLER BEARING 2 INNER SHIMS 3 PINION SHAFT 4 DRIVE...

Page 20: ...emove the outer tapered roller bearing cup from drop box housing 1 OUTER TAPERED ROLLER BEARING CUP 2 DROP BOX HOUSING STEP 10 Using a suitable soft drift remove the pinion inner tapered roller bearin...

Page 21: ...s Using a suitable bearing puller remove the tapered roller bearings from the differential assembly 1 BEARING CUP 2 TAPERED ROLLER BEARING 3 DIFFERENTIAL ASSEMBLY STEP 2 Remove the capscrews and hypoi...

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